More power to SPIRIT. I wish them the best. To address your point, though, there IS a difference, at least in terms of seat comfort. Spirit has the hardest, most uncomfortable seat I've ever sat in on any full size jet, and (unbelievably) even in most RJ's. The leg room is pretty awful too, and I'm only 5'10" tall. With that said, Spirit DOES provide ultra low fare service, and provides it with friendlier service than that provided by the Legacies and their RJ feeders.